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Question on Code P2135

336 views 1 reply 2 participants last post by  davester  
#1 ·
I have a 2009 Silverado with the 5.3 in it. Recently, when it starts cold, the check engine light comes on code P2135, runs like crap as well. If I shut the truck off and clear the code, it will be fine after that.

The question I have is I can replace the throttle position sensor, that's not a issue, but do I have to do a "relearn" with a scanner? Ive heard yes and no...

Thanks!